Methods Of Heat Transfer Flashcards

0
Q

What is the ability to do work or cause change?

A

Energy

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1
Q

Give 3 examples of how industry uses heat.

A

Weld and cut metals
Manufacture paper, glass, and textiles
Shape plastics

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2
Q

What is heat?

A

A form of energy

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3
Q

What is a measure of the amount of energy transferred?

A

Work

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4
Q

What is the force a falling object can exert when it falls?

A

Positional potential energy

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5
Q

What is the energy stored in food, batteries, or fuels?

A

Chemical energy

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6
Q

What is the energy an object has due to its motion?

A

Kinetic energy

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7
Q

The movement of what is a type of kinetic energy?

A

Particles

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8
Q

What is kinetic energy of particles and potential energy?

A

Internal energy

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9
Q

How is energy measured?

A

Joules

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10
Q

Heat is the —— energy transferred from one object to another as a result of the difference in —— between the two objects.

A

Internal, temperature

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11
Q

What is the average measure of kinetic energy possessed by moving particles.

A

Temperature

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12
Q

More particle movement = ——- temperature

A

High

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13
Q

Less particle movement = —— temperature

A

Low

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14
Q

What happens when a hot substance comes in contact with a cold substance? Why?

A

They reach the same temperature because the heat from the hot object is transferred to the cold object.

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15
Q

Heat flows from —– to —– temperatures, resulting in room temperature.

16
Q

How does water behave at 0 degrees C? At 100 degrees C?

A

0 - water freezes

100 - water boils

17
Q

What is the transfer of energy through contact?

A

Conduction

18
Q

Explain how kinetic energy is transferred from particle to particle through conduction.

A

When a solid heats and gains kinetic energy, the particles move more vigorously (faster) and passes its energy to the neighboring particles.

19
Q

What materials are good conductors?

A

Metals, silver, copper

20
Q

What materials are poor conductors?

A

Plastic, glass, wood, fabrics

21
Q

—– are poor conductors and are used in everyday materials.

A

Insulators

22
Q

What is the method by which heat travels through fluids?

A

Convection

23
Q

During convection, —– decreases and —– rises.

—– fluid rises and —– fluid sinks.

A

Density, matter

Hot, cold

24
How are off shore breezes and convection related?
The cold air from the land goes to the warmer water. The water warms the air causing it to rise. The cooler air moves in to replace it.
25
What is heat transfer through electromagnetic radiation?
Radiation
26
True or False - Infrared rays can travel through the vacuum of space?
True
27
What color is best to absorb radiation?
Black
28
Which color is best to reflect radiation?
White
29
Which material is used best for insulation of radiation?
Glass/shiny metal
30
What is the capability of an object to absorb energy in the form of heat for a given increase in temperature?
Specific heat
31
Specific heat involves the number of ----- of energy per ----- of a substance to increase an object one degree -----.
Joules, gram, Celsius
32
What is the total amount of heat stored; it is sensitive to size?
Thermal capacity